Legend has it that there was a warlord named Su Sha in the Yellow Emperor who invented seasoning salt with boiled seawater. Because the equipment is too simple, most of the extracted salts are rough, and the colors are blue, yellow, white, black and purple.

It has been recorded in Shuowen that raw food is called brine and cooked food is called salt. The name of salt is also recorded in Zhengzitong: there are different kinds of salt, such as bittern, well, cliff, stone and wood. This passage describes the history of making salt in Shashi. His behavior undoubtedly accelerated the development of human society, and because he was the first person to invent salt, he was honored as the "salt Sect" by later generations. Until now, there are many temples dedicated to salt Sect in many places.

Institutional change of salt;

The salt monopoly system in feudal society made it a financial income tool for the ruling class in feudal society, plundering people's wealth and making huge profits for its feudal rule. In the process of implementing salt monopoly, the ruling class pursues the maximization of its own interests on the one hand, and greatly increases the cost of system implementation on the other. It reduces the operating efficiency of the system and the net profit income of salt monopoly; On the other hand, due to the corruption of officials, bribery of officials at all levels has become a trend, which has seriously damaged the image of the ruling group in people's minds and its ruling ability, thus endangering the safety of the ruling class itself.